Infrared spectrum of chlorofluoromethane
1950; US government; Volume: 45; Issue: 3 Linguagem: Inglês
10.6028/jres.045.018
ISSN2376-5305
Autores Tópico(s)Atmospheric Ozone and Climate
ResumoIn order to compare its spectrum with that of other halogenated methanes, the infrared spectrum of chlorofluol'omethane has been measured in t he gaseous state from 2 to 30 microns.The longest wavelength band was observed at 26 microns.Twenty-five bands have been observed wi th cells of 5, 60, and 100 centimeters in length and with gas pressures up to 60 centimeters of mercury.N ine of the observed bands have been classified as fundam entals, and the remaining bands are attributed to harmonics and combinations.Several bands in the region from 1.5 to 2.5 microns were measured on a high resolution grating instrument, and it was possible to resolve each of seven bands into a series of lines in this region.These bands are located at 1.657, 1.682, 1.700, 1.755, 2.229, 2.287, and 2.436 micron s; the separation of the rotat ional lines is of the order of 2.3 cm-l for these bands. 'T ABLE 2. Classification of obs erved bands in chlorofluorom ethaneA ss ignment
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